Feng.tips=function (options) {
    var tips;
    $('.tips').on({
        mouseenter:function(){
            var tips_content = $(this).find("span").html();
            var that = this;
            // tips =layer.tips("<span style='color:#000;'>智能组卷：每个用户考试时抽到的试题及顺序随机组成</span>",
            //     that,{tips:[2,'#fff'],time:0,area: 'auto',maxWidth:500});
            tips = layer.tips(tips_content, that, options);
        },
        mouseleave:function(){
            layer.close(tips);
        }
    });
}